Date: Fri, 10 May 2013 11:29:30 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Jiri Olsa <jolsa@redhat.com>
Cc: linux-kernel@vger.kernel.org, Corey Ashford <cjashfor@linux.vnet.ibm.com>,
        Frederic Weisbecker <fweisbec@gmail.com>, Ingo Molnar <mingo@elte.hu>,
        Namhyung Kim <namhyung@kernel.org>, Paul Mackerras <paulus@samba.org>,
        Arnaldo Carvalho de Melo <acme@redhat.com>,
        Andi Kleen <ak@linux.intel.com>, David Ahern <dsahern@gmail.com>,
        Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH 0/9] perf: Adding better precise_ip field handling
Message-ID: <20130510092930.GF3039@dyad.programming.kicks-ass.net>
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 <20130509152022.GD1628@krava.brq.redhat.com>
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On Thu, May 09, 2013 at 05:20:22PM +0200, Jiri Olsa wrote:
> On Thu, May 09, 2013 at 05:07:44PM +0200, Peter Zijlstra wrote:
> > On Thu, May 09, 2013 at 03:32:15PM +0200, Jiri Olsa wrote:
> > > hi,
> > > adding sysfs attribute to specify the maximum allowed value
> > > for perf_event_attr::precise_ip field.
> > > 
> > > Adding functionality for simple 'p' modifier and 'precise' term
> > > to get the maximum allowed value for perf_event_attr::precise_ip
> > > field.
> > > 
> > 
> > You've seem to lost the part explaining why we want this.. :-)
> 
> well, initially it was an answer when we broke precise event
> monitoring in kernel so I wrote automated test for it (patches 1,2,3)
> https://lkml.org/lkml/2012/12/12/561

Oh urgh 1-3 aren't just tests; they introduce all this nonsense already :/
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